Color
#51a1cd
#51a1cdrgb(81, 161, 205)hsl(201, 55%, 56%)oklch(0.676 0.102 235.1)Colors that go with #51a1cd
Charcoal, Peru and Amber lead the list. Each partner is a real named colour with the reason it works — a wheel relationship, a neutral that carries it, or a pairing lifted from a palette or brand system that actually shipped — and every pair opens in the palette tool.
Charcoal #36454f
neutralshippedCharcoal is the text near-black for #51a1cd: softer than #000 and cool enough to feel like part of the same palette.
Peru #cd853f
complementaryshippedPeru sits directly opposite #51a1cd on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Amber #ffbf00
shippedAmber is paired with #51a1cd in 8 real palettes, including Salesforce's brand system and NBA's brand system, as the accent.
Blue #0000ff
shipped6 real palettes, including Qualcomm's brand system and Unity's brand system put Blue beside #51a1cd, as the accent.
Crimson #dc143c
shippedCrimson is paired with #51a1cd in 4 real palettes, including Riot Games's brand system and Diner, as the supporting colour.
Dark Orange #ff8c00
shippedDark Orange shows up next to #51a1cd in 4 real palettes, including Elastic's brand system and Learning App, as the lead colour.
Denim #1560bd
shippedDesigners have shipped Denim with #51a1cd: 8 real palettes, including Coca-Cola's brand system and Gopro's brand system, as the accent.
Dodger Blue #1e90ff
shippedDesigners have shipped Dodger Blue with #51a1cd: 4 real palettes, including Venmo's brand system and Patreon's brand system, as the lead colour.
Real palettes that use #51a1cd
Tints & shades
Harmonies
Contrast
| #51a1cd as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 2.87:1 | fail | fail | fail | |
Aaon black | 7.33:1 | pass | pass | pass | Passes AAA — no fix needed. |
Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #51a1cd as the background.
Brands using this color
No public brand in the corpus uses this exact color yet. Extract a brand to add one.
Fonts for this mood
#51a1cd reads as cool, modern. The font library is tagged with the same vocabulary:
Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — direct_palette, edit_direction, check_palette, check_contrast — read-only, no key. Every direction it proposes comes with a /colors/d/… link: open it, lock what you like, paste the link back, and the agent edits rather than re-rolls.
https://mcp.brandsweets.com/colors/mcpclaude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
›analyze #51a1cd and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/51a1cd-9cb1c4-df4e62-1f222d-e9f1f0?lock=0&style=vibrantWant the agent to remember your picks and write them into a living brand? Create a free BrandSweets workspace.
Machine-readable: color.md